How To Convert Guid Partition Table (GPT) To Master Boot Record (MBR)?

How to convert guid partition table (GPT) disk to master boot record (MBR) disk is a problem that many computer users may be encountered. This article will teach you three ways to solve the problem. One is with AOMEI Partition Assistant, the other two are

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Why Convert Guid Partition Table to MBR?

Although Guid Partition Table (GPT) is a new disk layout and has some advantages, there are still some situations need converting Guid Partition Table (GPT) to Master Boot Record (MBR). Let’s look at the following two examples from computer forum:

1. I have a Lenovo U510 and it came installed with Windows 8, but I want to install Windows 7 instead. The Windows 7 installation would not let me install it because the drive is formatted to GPT (Both 24GB SSD and 750GB hard drive). What should I do?

2. I wiped my Windows 8 thinking I could install Windows 7 x86 but I can’t because the disk is GPT. I need to convert to MBR. Is there a tool to do that?

3. When I boot my computer up, it’s unable to boot from the hard drive, as the BIOS just says can’t boot to hard drive. But when I take the drive out and put it into another computer (XP, 32 bit) to try to recover files, it doesn’t show up in Windows explorer, but shows up as a GPT protective drive (healthy) in administrative tools > storage utility, with no drive letter but just a blank next to the hard drive icon.

Convert Guid Partition Table(GPT) to Master Boot Record(MBR)

The second example asked a question “Is there a tool to do that?” The answer is yes. A professional partition software named AOMEI Partition Assistant is able to do this without data loss.

Method 1

Download, install and run AOMEI Partition Assistant Professional Edition. Right click Disk 1 and select “Convert to MBR Disk”.

Click “OK” in the pop-up window if you are sure.

Back to the main interface, you can see the pending operating. Click “Apply” and “Proceed” in the pop-up window to start converting.

On the right pane, ensure that the hard disk drive on which you want to reinstall Windows has no partition. (If it has, delete it first. Otherwise Convert to MBR option would be grayed out and would be disabled)

Then right-click the name of the disk (e.g. Disk 1) and click Convert to MBR from the context menu.

This method also request the disk is empty and contains no partitions. I don’t think it is a ideal method.

Summary

These methods are compared, and the method 1 is the best. Biggest advantage is that don’t mind a disk is empty or not. AOMEI Partition Assistant is professional and safe.